比较列日期/ w今天的日期

Question

我正在尝试将列LastUpdated与 todays 日期（以天为单位）进行比较，四舍五入到小数点后一位。我不断收到错误

ERROR at line 4:
ORA-00904: "DATEDIFF": invalid identifier

有什么想法吗？

SELECT
DISTINCT "AppName",
"ApprovedForRelease",
DATEDIFF(DAY,"LastUpdated",GETDATE())  AS "DaySinceUpdated" 
FROM BR_APP
WHERE "ApprovedForRelease" = 'Y';

Answer 1

在Oracle中，可以使用减法。要获取日期之间的时间，请截断时间：

SELECT DISTINCT "AppName", "ApprovedForRelease",
       (TRUNC(sysdate) - TRUNC("LastUpdated"))  AS "DaySinceUpdated" 
FROM BR_APP
WHERE "ApprovedForRelease" = 'Y';

您使用的代码基于SQL Server。